NPM · AUGUST 2026 · EARLY WARNING

Axios Prototype Pollution Vulnerability: Early Warning

EARLY WARNING · UNCONFIRMED. This page describes a developing threat that 0Day surfaced from early signals and has not yet independently confirmed. Details may change. Always verify against the primary sources before acting.
Severity
HIGH
Affected component
axios (npm)
Affected versions
>= 1.0.0, < 1.16.0 or >= 1.0.0, < 1.15.2 or >= 0.19.0, < 0.31.1 or >= 1.0.0, < 1.15.0 or < 0.31.0 or >= 1.0.0, < 1.15.2 or >= 0.28.0, < 0.33.0 or >= 1.0.0, < 1.18.0 or < 0.18.1 or >= 1.0.0, < 1.13.5 or < 0.30.3 or >= 1.0.0, < 1.15.1 or >= 1.0.0, < 1.12.0 or >= 0.28.0, < 0.30.2 or < 0.21.1 or >= 1.0.0, < 1.15.1 or < 0.31.1 or >= 1.0.0, < 1.15.1 or < 0.31.1 or >= 1.15.2, < 1.16.0 or >= 1.15.2, <= 1.15.2 or >= 1.0.0, < 1.15.1 or < 0.31.1 or >= 1.7.0, < 1.16.0 or >= 0.8.0, < 0.33.0 or >= 1.0.0, < 1.18.0 or >= 1.0.0, < 1.16.0 or < 0.32.0 or >= 1.3.2, < 1.7.4 or < 0.21.2 or >= 1.15.0, < 1.18.0 or >= 0.31.0, < 0.33.0 or >= 1.0.0, < 1.15.0 or < 0.31.0 or >= 0.31.1, < 0.33.0 or >= 1.15.2, < 1.18.0 or >= 0.31.1, < 0.33.0 or >= 1.15.1, < 1.18.0 or >= 1.0.0, < 1.16.0 or < 0.32.0 or >= 1.0.0, < 1.16.0 or < 0.32.0 or >= 1.7.0, < 1.18.0 or >= 1.0.0, < 1.8.2 or < 0.30.0 or >= 1.0.0, < 1.15.1 or < 0.31.1 or >= 1.0.0, < 1.18.0 or < 0.33.0 or >= 1.13.0, < 1.18.0 or >= 1.0.0, < 1.16.0 or < 0.32.0 or >= 1.0.0, < 1.15.1 or < 0.31.1 or >= 1.15.0, < 1.16.0 or < 0.32.0 or >= 0.28.0, < 0.33.0 or >= 1.0.0, < 1.18.0 or >= 1.0.0, < 1.15.1 or < 0.31.1 or >= 1.0.0, < 1.15.2 or >= 1.13.0, < 1.13.2 or >= 1.0.0, < 1.15.1 or < 0.31.1 or >= 1.0.0, < 1.15.1 or < 0.31.1 or >= 1.0.0, < 1.6.0 or >= 0.8.1, < 0.28.0 or >= 1.0.0, < 1.15.1 or < 0.31.1 or >= 1.15.2, < 1.18.0 or >= 1.0.0, < 1.15.1 or < 0.31.1 or >= 0.30.4, <= 0.30.4 or >= 1.14.1, <= 1.14.1
Patched version
Not yet available
GHSA-38GX-CFQF-F652GHSA-XJ6Q-8X83-JV6G

An early warning has been issued for a prototype pollution vulnerability in Axios versions >=1.15.2 and <1.18.0. This vulnerability allows an attacker to inject Basic auth credentials or replace an existing Authorization header.

What happened

An early warning has been issued for a prototype pollution vulnerability in Axios versions >=1.15.2 and <1.18.0. This vulnerability, tracked as GHSA-38GX-CFQF-F652 and GHSA-XJ6Q-8X83-JV6G, was first flagged on 2026-08-01T15:30:27+00:00. The vulnerability is located in the Basic auth subfield handling of Axios. An attacker who controls the polluted prototype values can inject attacker-chosen Basic auth credentials or replace an existing Authorization header.

The vulnerability is reportedly not yet exploited in the wild and is not part of a supply-chain attack. However, due to the severity of the issue, it is recommended to upgrade to axios@1.18.0 or later to mitigate the risk of prototype pollution.

What to do about it

How 0Day would have caught this

MATCHED TO YOUR ACTUAL DEPENDENCY GRAPH0Day matches every incoming threat signal against your GitHub organization’s full dependency graph, including transitive dependencies. If axios is anywhere in your dependency tree, the engineers who own the affected repositories get a push alert the moment it is flagged — no manual audit to remember to run.

Read how this differs from waiting on a scanner to catch a known advisory, or see the exact, read-only access 0Day needs to do this for an organization.

Frequently asked questions

Am I affected?

You are affected if your project uses Axios versions >=1.15.2 and <1.18.0.

What should I do right now?

Upgrade to axios@1.18.0 or later to mitigate the risk of prototype pollution.

Is this vulnerability being exploited in the wild?

The primary sources indicate that this vulnerability is not yet exploited in the wild.

Where can I find more information about this vulnerability?

Consult the primary sources: GHSA-38GX-CFQF-F652 and GHSA-XJ6Q-8X83-JV6G.

Sources

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